Screw fastener
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United States of America Patent
Stats
-
Mar 26, 1996
Grant Date -
N/A
app pub date -
Apr 29, 1994
filing date -
Apr 30, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A screw fastener helps secure a tapping screw easily and strongly to a wall. A starting hole is formed in a wall. The trunk of the screw fastener is inserted into the starting hole. The trunk has such a shape that it comes into contact with the inner surface of the wall defining the starting hole. A tapping screw is driven into the screw fastener thus inserted in the starting hole. The threads on the screw will bite into both the wall and the trunk so that the screw will be rigidly fastened to the wall.
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